39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
#if !defined(STFU_CONFIG)
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#define STFU_CONFIG
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/* Determines output framerate, in times per second. */
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#define STFU_AUDIO_FRAME_RATE 44100
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#define STFU_AUDIO_CHANNEL_COUNT 2
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#define STFU_C4_FREQUENCY 261.63f
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#define STFU_A4_FREQUENCY 440.0f
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#define STFU_NOTE_UPSCALE_FACTOR 1.059463094f
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#define STFU_NOTE_DOWNSCALE_FACTOR 0.943874313f
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/* Introduces delayed buffering for purposes of crossfading channels when notes
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* are retriggered, needed for filtering clicks */
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#define STFU_CROSSFADE_BUFFER_FRAMES 32
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static const float STFU_SCALE[12] = {
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STFU_C4_FREQUENCY,
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STFU_C4_FREQUENCY * STFU_NOTE_UPSCALE_FACTOR,
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STFU_C4_FREQUENCY * STFU_NOTE_UPSCALE_FACTOR *
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STFU_NOTE_UPSCALE_FACTOR,
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STFU_C4_FREQUENCY * STFU_NOTE_UPSCALE_FACTOR *
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STFU_NOTE_UPSCALE_FACTOR * STFU_NOTE_UPSCALE_FACTOR,
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STFU_C4_FREQUENCY * STFU_NOTE_UPSCALE_FACTOR *
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STFU_NOTE_UPSCALE_FACTOR * STFU_NOTE_UPSCALE_FACTOR *
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STFU_NOTE_UPSCALE_FACTOR,
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STFU_A4_FREQUENCY * STFU_NOTE_DOWNSCALE_FACTOR *
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STFU_NOTE_DOWNSCALE_FACTOR * STFU_NOTE_DOWNSCALE_FACTOR *
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STFU_NOTE_DOWNSCALE_FACTOR,
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STFU_A4_FREQUENCY * STFU_NOTE_DOWNSCALE_FACTOR *
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STFU_NOTE_DOWNSCALE_FACTOR * STFU_NOTE_DOWNSCALE_FACTOR,
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STFU_A4_FREQUENCY * STFU_NOTE_DOWNSCALE_FACTOR *
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STFU_NOTE_DOWNSCALE_FACTOR,
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STFU_A4_FREQUENCY * STFU_NOTE_DOWNSCALE_FACTOR,
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STFU_A4_FREQUENCY,
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};
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#endif
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